Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 660, Issue 1, Pages 2-7Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2011.04.023
Keywords
Ordered mesoporous carbon; Folic acid; Electroanalysis; Voltammetry
Categories
Funding
- National Natural Science Foundation of China [20875012]
- Jilin Provincial Science and Technology Development Foundation [20090151]
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With ordered mesoporous carbon (OMC) as the modifier, a voltammetric sensor for folic acid (FA) was constructed on a glassy carbon electrode (GCE). Due to the good characteristics of OMC, FA exhibited an enhanced electrochemical response and lower reduction potential in the neutral solution. In addition, the experimental parameters such as pH values, accumulation time and potential were optimized. Using the differential pulse voltammetry (DPV) measurement, the peak current was found to be linear with FA concentration in the range from 5.0 x 10(-10) to 1.0 x 10(-7) M with a lower detection limit of 6.0 x 10(-11) M (S/N = 3). Also, in real samples analysis, the as-prepared sensor successfully gives satisfying results. (C) 2011 Elsevier B.V. All rights reserved.
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